Saw-tooth shaper.



T. F. CARROLL.

SAW TOOTH SHAPER.

APPLICATION FILED 001. 16, 1909.

' 997340, Patented July 4, 1911.

NOGRAPII CO ASHINGTON D L 2 SHEETS-SHEET l.

T. RCARROLL. SAW TOOTH SHAPER.

APPLICATION FILED 001'. 16, 1909.

997,040, Patented July 4, 1911.

2 SHBETSSHEET 2.

UNITED STATES THOMAS F. CARROLL, OF EAU CLAIRE, WISCONSIN.

SAW-TOOTH SHAPER.

To all whom it may concern."

Be it known that I, THOMAS F. CARROLL, a citizen of the United States,residing at Eau Claire, in the county of Eau Claire and State ofWisconsin, have invented a new and useful Saw-Tooth Shaper, of which thefollowing is a specification.

The invention relates to improvements in saw tooth shapers.

The object of the present invention is to improve 'the construction ofsaw tooth shapers, and to provide asimple, inexpensive and eflicientdevice of this character, adapted to uniformly shape teeth of a sawblade, and capable of being readily moved over the same and properlypositioned with relation to the teeth Without injuring the point of thesame.

A further object of the invention is to provide a saw shaper of thischaracter capable of ready adjustment to arrange it for operating on sawblades of different thicknesses and to position a saw blade centrally ofthe device.

Another object of the invention is to produce a. saw shap-er havingreversible and interchangeable dies provided with a plurality oftooth-engaging portions, adapted to be successively presented to a sawblade as they become worn.

With these and other objects in view, the invention consists in theconstruction and novel combination of parts hereinafter fully described,illustrated in the accompanying drawings, and pointed out in the claimshereto appended; it being understood that various changes. in the form,proportion, size and minor details of construction, within the scope ofthe claims, may be resorted to without departing from the spirit Orsacrificing any of the advantages of the invention.

In the drawings :Figure 1 is a perspective view of a-saw shaper,constructed in accordance with this invention. Fig. 2 is a centrallongitudinal sectional view of the same. Fig. 3 is a reverse plan viewof the saw shaper. Fig. 4 is a transverse sectional View on the line 44of Fig. 3. Fig. 5 is a detail perspective view of the head of the sawshaper. Fig. 6 is a similar view of one of the jaws. Fig. 7 is a detailview of one of the arcuate adjusting plates or members. Fig. 8 is adetail View of the gage.

Specification of Letters Patent.

Application filed October 16, 1909.

Patented July 4, 1911. Serial No. 523,094.

Like numerals of reference designate corresponding parts of all thefigures of the drawings.

1 designates a block or head, constructed of suitable metal and havingspaced depending side portions 2, forming a saw-receiving groove or wayand recessed at their inner faces at 3 for the reception of oppositejaws 4. The jaws, which have enlarged rear portions, are pivoted to therear portion of the block or head at opposite sides thereof by pivotbolts 5, which pass through slots 6 and 7, arranged at right angles toeach other, as clearly shown in Fig. 5 of the drawings and adapted topermit an adjustment of the jaws. The heads of the bolts 5 arecounter-sunk in the lower faces of the jaws t, and the nuts 8 of thepivot bolts are located at the upper face of the block or head. Thefront reduced portions of the jaws operate in the recesses 3 and areguided and supported by the depending side portions 2 which have solidinwardly extending front portions, and said jaws are equipped at theirinner engaging sides with dies 9, having shanks 10 detachably fitted intransverse openings 11 of the front portions of the jaws. The frontportions of the jaws are provided at their inner faces with recesses 12to receive the dies, which are oblong and have a slight bevel 13 at eachcorner to pro vide a tooth engaging portion. The dies areinterchangeable and reversible, being adapted to be turned end for end.By this adjustment any one of the beveled portions may be brought intoposition for engaging asaw tooth, and as one engaging portion becomesworn another may be presented for operation. This construction andarrangement enables the dies to be used for a considerable length oftime without requiring new ones. The shoulders formed by the recesses 12prevent rotary movement of the dies on their shanks.

The jaws are operated by opposite right and left hand screws 14,engaging corresponding threaded openings 15 of the spaced side portionsof the block or head and adapted to be rotated to force the jawsinwardly to engage and shape a saw tooth. The screws are operated by anoscillatory handle or lever 16, having spaced side portions 17approximately L-shaped and form ing a fork for straddling the block orhead.

The lower terminals of the spaced side'portions of the handle areprovided with circular openings 18, and are mounted on smooth roundedportions 19 of the screws. The screws are provided beyond the smoothrounded portion with polygonal portions 20, preferably of octagonalshape and re ceiving arcuate connecting plates or members 21, havingpolygonal openings 22, conforming to the configuration of the poly onalportion of the screws and removably fitted thereon and adapted to bedetached and arranged in different positions with relation to thescrews. The outer terminals 14" are threaded to receive nuts 15 fordetachably retaining the connecting members on the polygonal portions ofthe aw actuating screws. The connecting members 21 have arcuate slots23, arranged concentric with the adjusting screws and receiving thebolts,

24, or other suitable fastening devices for connecting the spaced sideportions of the handle'with the adjustable members 21. The bolts 24 havesmooth terminal portions 25 and outer threaded portions, the smoothinner portions 25 being mounted in apertures of the side portions of thehandle or lever, and the outer threaded portions being arranged in thearcuate slots 23 and receiving nuts 26 for engaging the outer faces ofthe members 21. The members 21 are clamped between the nuts 26 andcollars or flanges 27 of the bolts, and the fastening means forconnecting the handle with the plates or members 21 afford a rapid andcomplete adjustment of the latter. The screws are independentlyadjustable to enable the saw blade to be maintained cent-rally of theblock or head, and they are adjustable with respect to the handle toenable saw blades of diflerent thicknesses to be operated on, and thehandle is adjustable with respect to the screws to enable it to operatein the same are of movement at all times.

The saw shaper is positioned on a saw blade by means of a gage 28,tapered from front to rear to present a lower inclined face 29, andtapered also laterally to provide a reduced rear portion. The lateraltaper is formed by side recesses 30, and the top portion 31 is extendedin rear of the rear end of the depending reduced portion. The dependingreduced portion formed by the said recesses 30 is provided at its rearend with a recess 32, adapted to receive the point of a 7 saw tooth 33,as illustrated in dotted lines in Fig. 2 of the drawings, and forming alower tooth-engaging portion 34. The lower tooth- ,engaging portionabuts against the front of the saw tooth below the point thereof, sothat there is no liability of injuring the point I in placing the deviceon a saw blade, and

the point is also exposed by this arrangement, so that both sides of asaw tooth may beuniformly shaped by the dies oflthe jaws.

The gage is adjustable to position the dies properly with relation tothe point of a tooth, and the said gage is secured in its adjustment bymeans of a nut 35, arranged on a threaded stem or shank 36, extendingupwardly from the gage and operating in a longitudinal slot 37 of theblock or head. An accurate adjustment of the gage is obtained by meansof a screw 38, mounted in a threaded opening 39 of the block or head andlocated in advance of and abutting against the shank or stem 36. Thescrew 38 also by forming an abutment prevents any accidental displacement of the gage, so that there is no liability of the sameslipping after it has been adjusted.

The block or head is provided in its lower face with a longitudinalgroove 40, which receives the gage and which also receives alongitudinal strip 41, presenting a smooth surface to the saw teeth andextending rearwardly from the block or head and adapted to bridge therecess between a plurality of saw teeth and thereby enable the sawshaper to be readily moved over the cutting edge of a saw blade. Thefront portion of the longitudinal strip overlaps the rear portion of thegage and does not interfere with the adjustment of the same along thegroove. The rear extended portion of the strip is curved upward at theouter end. The longitudinal groove is tapered or dovetailed in crosssection, and the saw shaper is equipped at the back with a guidinghandle 42, having a shank or stem 43 extending downwardly and forwardlyand provided at the front with laterally extending attaching arms 44,which are secured by screws or other suitable fastending devices to therear edge of the block or head. The operator grasps the guiding handlewith one hand and the operating handle or lever with the other hand, andthe saw shaper is placed on a saw blade with the gage abutting againstthe tooth to be operated on. The handle or lever is then swungrearwardly to carry the shaping dies into engagement with the saw tooth,which is uniformly shaped at each side. The device is then advanced onthe saw and engaged with the next tooth, the operation being continueduntil all the teeth of the saw have been shaped. After the teeth of onesaw blade have been operated on, the device may be readily adjusted toalter the position of the parts to adapt them for operating on a sawblade of different thicknesses, or one having teeth of a differentcharacter.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is

1. A device of the class described including a block or head, oppositejaws, right and left hand screws mounted in the head and arranged toactuate the jaws and provided with rounded portions located at the sidefaces of the block or head, said screws being also provided with outerpolygonal portions arranged beyond the rounded portions, a handle havingspaced sides mounted on the rounded portions of the screws and fittedagainst the side faces of the block or head, adjustable plates providedwith polygonal openings and adjustably and detachably mounted on thepolygonal portions of the screws, said plates being also provided witharcuate slots, bolts extending through the slots of the plates andprovided intermediate of their ends with collars and having smooth innerportions mounted on the sides of the handle, and nuts arranged on thebolts and engaging the plates and clamping the same against the saidcollars.

2. A device of the class described including a block or head providedwith a longitudinal slot and having a threaded opening in advance of theslot, opposite laterally movable jaws, a gage depending from the blockand having a threaded shank extending through the said slot, a nutmounted on the shank, and a set screw mounted'in the threaded opening ofthe block and abutting against the shank of the gage. I

3. A device of the class described, including a block having spaceddepending sides provided with a longitudinal groove extend ing betweenthe said sides, jaws operating between the spaced sides and supportedand guided by the same, a gage mounted in and adjustable along the frontportion of the groove and arranged between the depending sides of theblock, and a longitudinal strip mounted in the groove in rear of thegage and arranged to rest upon the cutting edge of a saw blade andhaving its front portion overlapping the rear portion of the gage.

4:. A device of the class described including a block having spacedintegral depending sides provided with inwardly extending frontportions, said block being also provided with a longitudinal groove,opposite jaws supported and guided by the depending sides, a gagemounted in the front portion of the said groove between the inwardlyextending front portions of the sides of the block, a strip mounted inthe rear portion of the groove and extending rearwardly from the blockand arranged to rest upon the cutting edge of a saw blade, and a handlelocated above the extended portion of the strip and connected with theblock.

5. A device of the class described including a block or head providedwith spaced integral sides depending from the lower face of the block orhead at the front thereof and having recesses in their inner faces openat the back and terminating short of the front ends of the sides, whichhave solid front portions, opposite jaws guided in the recesses of thedepending sides and supported by the latter, means for operating thesame, and a gage adjustably mounted between the solid front portions ofthe sides of the block or head.

In testimony that I- claim the foregoing as my own, I have heretoaflixed my signature in the presence of two witnesses.

THOMAS F. CARROLL.

Witnesses:

MANDA RONNEY, J. F. FARR.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, I). C.

